the great recession. if you just delay and make somebody wait a few days before they get a gun, if they are a hardened criminal, that won't make a difference, but if they are thinking about suicide, if you think of it as a public health issue. >> it's an interesting point. i read a lot of studies about suicide and even if you delay somebody a few minutes or seconds in some cases, that can be all the difference in whether or not somebody follows through. it is counter intuitive, but even a few minutes can make a difference. we have to leave it there. appreciate you being on. up next, the student accused of opening fire in a california high school. how a teacher stepped in to stop the attack. humans. even when we cross our t's and dot our i's, we still run into problems. namely, other humans. which is why at liberty mutual insurance, auto policies come with new car replacement and accident forgiveness if you qualify.